Quercus. AMENTACEjE. 7 



Those le;ives are of the same section as those of the two former species. 

 Their form is ovate, rounded at the base to a comparatively long petiole, 

 obtusely pointed, the borders marked by short distant teeth, scarcely dis- 

 cernible in some of the specimens, like that of Fig. 7 for example. The 

 nervation is subcamptodrome, the lower secondary nerves curving to the 

 borders and following them in festoons, the upper ones entering the teeth 

 while their upper branches follow the borders, and pass to the intermediate 

 teeth by veinlets. The secondary veins are distant, the lower ones at a 

 more open angle of divergence, and curved, the upper ones nearly straight, 

 generally forking once, or simple, or sparingly branching in the middle 

 of the areas. 



To this species, also, the fossil leaves published by European authors 

 offer scarcely any analogy. The peculiar nervation is comparable to that 

 of the leaves of Quercus attemata, Goepp , Tert. fl. v. Schossnitz, p. 17, PI. 

 VIII. Figs. 4, o, which have a different type of denticulation of the bor- 

 ders, and their base narrowed to the petiole. A more marked relation is 

 found with the living species Q. crassifoUa, Humb. and Bonpl., of Mexico, 

 and Q. agrifolia, Nee, of California. 



Habitat. — Chalk Bluffs, Nevada County, California. Voy's Collection. 



Quercus Goepperti, sp. nov. 



PI, II Fi//. 11. 



Leaf small, oblong, narrowed in equal <!<</rt< upward to an obtuse point, and downward 

 to a short petiole ; border s^ doubly serratt or denticular : secondary veins parallel, 



subcauijitodrome. 



The species is known by a single oblong, lanceolate obtusely pointed 

 leaf, four centimeters long, a little more than one centimeter broad, nar- 

 rowed in curving to a short slender petiole; borders denticulate, the teeth 

 entered by the points of the secondary veins, being a little larger or more 

 prominent ; secondary veins parallel, either entering the teeth by the 

 points, or curving quite near the borders, and passing to them by branch- 

 lets, a nervation of the same type as that of Quercus Nevadensis. By the 

 border divisions only, this leaf is related to Q. attenuata, Goepp. loc. fit.. Fig. 

 5 ; but it greatly differs from it by its more numerous secondary veins, its 

 oblong linear shape, etc. 



Hahilat. — Same as the former. Voy's Collection. 



